Camera optical lens

ABSTRACT

Provided is a camera optical lens including, sequentially from an object side to an image side: a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a negative refractive power; a fourth lens having a positive refractive power; and a fifth lens having a negative refractive power. The camera optical lens satisfies following conditions: 0.75≤f1/f≤0.86; −0.30≤f1/f2≤−0.20; 1.30≤(f1+f4)/f≤1.50; −22.00≤(f2+f3+f5)/f≤−9.00; and 0.05≤d8/f≤0.08, where f denotes a focal length of the camera optical lens; f1, f2, f3, f4 and f5 denote focal lengths of the first, second, third, fourth, and fifth lenses, respectively; and d8 denotes an on-axis distance from an image side surface of the fourth lens to an object side surface of the fifth lens. The camera optical lens can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.

TECHNICAL FIELD

The present invention relates to the field of optical lens, and moreparticularly, to a camera optical lens suitable for handheld terminaldevices, such as smart phones or digital cameras, and camera devices,such as monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera optical lens is increasingly higher, but in general thephotosensitive devices of camera optical lens are nothing more thanCharge Coupled Devices (CCDs) or Complementary Metal-Oxide SemiconductorSensors (CMOS sensors). As the progress of the semiconductormanufacturing technology makes the pixel size of the photosensitivedevices become smaller, plus the current development trend of electronicproducts towards better functions and thinner and smaller dimensions,miniature camera optical lenses with good imaging quality have become amainstream in the market.

In order to obtain better imaging quality, the lens that istraditionally equipped in mobile phone cameras adopts a three-piece orfour-piece lens structure. Also, with the development of technology andthe increase of the diverse demands of users, and as the pixel area ofphotosensitive devices is becoming smaller and smaller and therequirement of the system on the imaging quality is becomingincreasingly higher, a five-piece lens structure gradually emerges inlens designs. Although the common five-piece lens has good opticalperformance, its refractive power, lens spacing and lens shape settingsstill have some irrationality, such that the lens structure cannotachieve high optical performance while satisfying design requirementsfor ultra-thin, wide-angle lenses having large apertures.

SUMMARY

In view of the problems, the present invention aims to provide a cameraoptical lens, which can achieve high optical performance whilesatisfying requirements for ultra-thin, wide-angle lenses having largeapertures.

In an embodiment, the present invention provides a camera optical lens.The camera optical lens includes, sequentially from an object side to animage side: a first lens having a positive refractive power; a secondlens having a negative refractive power; a third lens having a negativerefractive power; a fourth lens having a positive refractive power; anda fifth lens having a negative refractive power. The camera optical lenssatisfies following conditions: 0.75≤f1/f≤0.86; −0.30≤f1/f2≤−0.20;1.30≤(f1+f4)/f≤1.50; −22.00≤(f2+f3+f5)/f≤−9.00; and 0.05≤d8/f≤0.08,where f denotes a focal length of the camera optical lens; f1 denotes afocal length of the first lens; f2 denotes a focal length of the secondlens; f3 denotes a focal length of the third lens; f4 denotes a focallength of the fourth lens; f5 denotes a focal length of the fifth lens;and d8 denotes an on-axis distance from an image side surface of thefourth lens to an object side surface of the fifth lens.

As an improvement, the camera optical lens further satisfies a followingcondition: 0.30≤R1/f≤0.35, where R1 denotes a curvature radius of anobject side surface of the first lens.

As an improvement, the camera optical lens further satisfies followingconditions: −3.96≤(R1+R2)/(R1−R2)≤−1.19; and 0.06≤d1/TTL≤0.21, where R1denotes a curvature radius of an object side surface of the first lens;R2 denotes a curvature radius of an image side surface of the firstlens; d1 denotes an on-axis thickness of the first lens; and TTL denotesa total optical length from the object side surface of the first lens toan image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies followingconditions: −7.86≤f2/f≤−1.88; 0.11≤(R3+R4)/(R3−R4)≤4.38; and0.03≤d3/TTL≤0.09, where R3 denotes a curvature radius of an object sidesurface of the second lens; R4 denotes a curvature radius of an imageside surface of the second lens; d3 denotes an on-axis thickness of thesecond lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.

As an improvement, the camera optical lens further satisfies followingconditions: −32.32≤f3/f≤−3.32; −4.81≤(R5+R6)/(R5−R6)≤14.84; and0.03≤d5/TTL≤0.10, where R5 denotes a curvature radius of an object sidesurface of the third lens; R6 denotes a curvature radius of an imageside surface of the third lens; d5 denotes an on-axis thickness of thethird lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.

As an improvement, the camera optical lens further satisfies followingconditions: 0.28≤f4/f≤0.96; 0.64≤(R7+R8)/(R7−R8)≤2.38; and0.08≤d7/TTL≤0.25, where R7 denotes a curvature radius of an object sidesurface of the fourth lens; R8 denotes a curvature radius of the imageside surface of the fourth lens; d7 denotes an on-axis thickness of thefourth lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.

As an improvement, the camera optical lens further satisfies followingconditions: −1.03≤f5/f≤−0.29; −0.74≤(R9+R10)/(R9−R10)≤0.43; and0.04≤d9/TTL≤0.15, where R9 denotes a curvature radius of the object sidesurface of the fifth lens; R10 denotes a curvature radius of an imageside surface of the fifth lens; d9 denotes an on-axis thickness of thefifth lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.

As an improvement, the camera optical lens further satisfies a followingcondition: TTL/IH≤1.40, where TTL denotes a total optical length from anobject side surface of the first lens to an image plane of the cameraoptical lens along an optic axis; and IH denotes an image height of thecamera optical lens.

As an improvement, the camera optical lens further satisfies a followingcondition: Fno≤2.25, where Fno denotes an F number of the camera opticallens.

As an improvement, the camera optical lens further satisfies a followingcondition: 0.45≤f12/f≤1.56, where f12 denotes a combined focal length ofthe first lens and the second lens.

The present invention has advantageous effects in that the cameraoptical lens according to the present invention has excellent opticalperformance, is ultra-thin, wide-angle and has large apertures, makingit especially suitable for high-pixel camera optical lens assembly ofmobile phones and WEB camera optical lenses formed by camera elementssuch as CCD and CMOS.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present invention. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 2 of the present invention;

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 3 of the present invention;

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9; and

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DESCRIPTION OF EMBODIMENTS

The present invention will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent invention more apparent, the present invention is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

Referring to FIG. 1, the present invention provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 according to Embodiment1 of the present invention. The camera optical lens 10 includes fivelenses. Specifically, the camera optical lens 10 includes, sequentiallyfrom an object side to an image side, an aperture S1, a first lens L1having a positive refractive power, a second lens L2 having a negativerefractive power, a third lens L3 having a negative refractive power, afourth lens L4 having a positive refractive power, and a fifth lens L5having a negative refractive power. An optical element such as a glassfilter (GF) can be arranged between the fifth lens L5 and an image planeSi.

A focal length of the camera optical lens 10 is defined as f, and afocal length of the first lens L1 is defined as f1. The camera opticallens 10 should satisfy a condition of 0.75≤f1/f≤0.86, which specifies aratio of the focal length of the first lens L1 to the focal length ofthe camera optical lens 10. This can effectively balance sphericalaberrations and a field curvature of the system.

A focal length of the second lens L2 is defined as f2. The cameraoptical lens 10 should satisfy a condition of −0.30≤f1/f2≤−0.20, whichspecifies a ratio of the focal length of the first lens L1 to the focallength of the second lens L2. The appropriate distribution of the focallengths leads to better imaging quality and a lower sensitivity.

A focal length of the fourth lens L4 is defined as f4. The cameraoptical lens 10 should satisfy a condition of 1.30≤(f1+f4)/f≤1.50, whichspecifies a ratio of a sum of the focal lengths of the first lens L1 andthe fourth lens L4 to the focal length of the camera optical lens 10.When the condition is satisfied, the refractive power of the fourth lensL4 can be effectively distributed, thereby correcting aberrations of theoptical system and thus improving imaging quality.

A focal length of the third lens L3 is defined as f3, and a focal lengthof the fifth lens L5 is defined as f5. The camera optical lens 10 shouldsatisfy a condition of −22.00≤(f2+f3+f5)/f≤−9.00, which specifies aratio of a sum of the focal lengths of the second lens L2, the thirdlens L3 and the fifth lens L5 to the focal length of the camera opticallens 10. When the condition is satisfied, the refractive power of thefourth lens L4 can be effectively distributed, thereby improvingperformance of the optical system.

An on-axis distance from an image side surface of the fourth lens L4 toan object side surface of the fifth lens L5 is defined as d8. The cameraoptical lens 10 should satisfy a condition of 0.05≤d8/f≤0.08, whichspecifies a ratio of the on-axis distance from the image side surface ofthe fourth lens L4 to the object side surface of the fifth lens L5 tothe focal length of the camera optical lens 10. When the condition issatisfied, reduction of the total length can be facilitated, therebyachieving ultra-thin lenses.

A curvature radius of an object side surface of the first lens L1 isdefined as R1. The camera optical lens 10 should satisfy a condition of0.30≤R1/f≤0.35, which specifies a ratio of the curvature radius of theobject side surface of the first lens L1 to the focal length of thecamera optical lens 10. This can alleviate the deflection of lightpassing through the lens, thereby effectively reducing aberrations.

The curvature radius of an object side surface of the first lens L1 isdefined as R1, and a curvature radius of an image side surface of thefirst lens L1 is defined as R2. The camera optical lens 10 shouldsatisfy a condition of −3.96≤(R1+R2)/(R1−R2)≤−1.19. When the conditionis satisfied, a shape of the first lens L1 can be reasonably controlled,so that the first lens L1 can effectively correct spherical aberrationsof the system.

A total optical length from the object side surface of the first lens L1to an image plane of the camera optical lens 10 along an optic axis isdefined as TTL, and an on-axis thickness of the first lens is defined asd1. The camera optical lens 10 should satisfy a condition of0.06≤d1/TTL≤0.21. When the condition is satisfied, ultra-thin lenses canbe achieved.

The focal length of the second lens L2 is defined as f2. The cameraoptical lens 10 should satisfy a condition of −7.86≤f2/f≤−1.88, whichspecifies a ratio of the focal length of the second lens L2 to the focallength of the camera optical lens 10. By controlling the negativerefractive power of the second lens L2 within the reasonable range,correction of aberrations of the optical system can be facilitated.

A curvature radius of an object side surface of the second lens L2 isdefined as R3, and a curvature radius of an image side surface of thesecond lens L2 is defined as R4. The camera optical lens 10 shouldsatisfy a condition of 0.11≤(R3+R4)/(R3−R4)≤4.38, which specifies ashape of the second lens L2. This can facilitate correction of anon-axis aberration with development towards ultra-thin, wide-anglelenses.

An on-axis thickness of the second lens L2 is defined as d3. The cameraoptical lens 10 should satisfy a condition of 0.03≤d3/TTL≤0.09. When thecondition is satisfied, ultra-thin lenses can be achieved.

The focal length of the third lens L3 is defined as f3. The cameraoptical lens 10 should satisfy a condition of −32.32≤f3/f≤−3.32. Theappropriate distribution of the refractive power leads to better imagingquality and a lower sensitivity.

The curvature radius of the object side surface of the third lens L3 isdefined as R5, and a curvature radius of an image side surface of thethird lens L3 is defined as R6. The camera optical lens 10 shouldsatisfy a condition of −4.81≤(R5+R6)/(R5−R6)≤14.84. This can alleviatethe deflection of light passing through the third lens L3, therebyeffectively reducing aberrations.

The on-axis thickness of the third lens L3 is defined as d5. The cameraoptical lens 10 should satisfy a condition of 0.03≤d5/TTL≤0.10. When thecondition is satisfied, ultra-thin lenses can be achieved.

The focal length of the fourth lens L4 is defined as f4. The cameraoptical lens 10 should satisfy a condition of 0.28≤f4/f≤0.96, whichspecifies a ratio of the focal length of the fourth lens L4 to the focallength of the camera optical lens 10. When the condition is satisfied,the performance of the optical system can be improved.

A curvature radius of an object side surface of the fourth lens L4 isdefined as R7, and a curvature radius of the image side surface of thefourth lens L4 is defined as R8. The camera optical lens 10 shouldsatisfy a condition of 0.64≤(R7+R8)/(R7−R8)≤2.38, which specifies ashape of the fourth lens L4. This can facilitate correction of anoff-axis aberration with development towards ultra-thin, wide-anglelenses.

The on-axis thickness of the fourth lens L4 is defined as d7. The cameraoptical lens 10 should satisfy a condition of 0.08≤d7/TTL≤0.25. When thecondition is satisfied, ultra-thin lenses can be achieved.

The focal length of the fifth lens L5 is defined as f5. The cameraoptical lens 10 should satisfy a condition of −1.03≤f5/f≤−0.29. Thelimitation of the fifth lens f5 can effectively make a light angle ofthe camera optical lens 10 gentle and reduce the tolerance sensitivity.

A curvature radius of the object side surface of the fifth lens L5 isdefined as R9, and a curvature radius of an image side surface of thefifth lens L5 is defined as R10. The camera optical lens 10 shouldsatisfy a condition of −0.74≤(R9+R10)/(R9-R10)≤0.43, which specifies ashape of the fifth lens L5. This can facilitate correction of anoff-axis aberration with development towards ultra-thin, wide-anglelenses.

An on-axis thickness of the fifth lens L5 is defined as d9. The cameraoptical lens 10 should satisfy a condition of 0.04≤d9/TTL≤0.15. When thecondition is satisfied, ultra-thin lenses can be achieved.

Further, the total optical length from the object side surface of thefirst lens to the image plane of the camera optical lens along the opticaxis is defined as TTL, and an image height of the camera optical lens10 is defined as IH. The camera optical lens 10 should satisfy acondition of TTL/IH≤1.40. When the condition is satisfied, ultra-thinlenses can be achieved.

An F number of the camera optical lens 10 is defined as Fno, i.e., aratio of an effective focal length to an entrance pupil diameter. Thecamera optical lens 10 should satisfy a condition of Fno≤2.25. When thecondition is satisfied, lenses having large apertures and high imagingperformance can be achieved.

A combined focal length of the first lens L1 and the second lens L2 isdefined as f12. The camera optical lens 10 should satisfy a condition of0.45≤f12/f≤1.56. This can eliminate aberration and distortion of thecamera optical lens 10, suppress the back focal length of the cameraoptical lens 10, and maintain miniaturization of the camera lens systemgroup.

When the above conditions are satisfied, the camera optical lens 10 willhave high optical imaging performance while satisfying designrequirements for ultra-thin, wide-angle lenses having large apertures.With these characteristics, the camera optical lens 10 is especiallysuitable for high-pixel camera optical lens assembly of mobile phonesand WEB camera optical lenses formed by imaging elements such as CCD andCMOS.

In the following, examples will be used to describe the camera opticallens 10 of the present invention. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,curvature radius, on-axis thickness, inflexion point position, andarrest point position are all in units of mm.

TTL: Optical length (the total optical length from the object sidesurface of the first lens L1 to the image plane Si of the camera opticallens along the optic axis) in mm.

In an example, inflexion points and/or arrest points can be arranged onthe object side surface and/or image side surface of the lens, so as tosatisfy the demand for the high quality imaging. The description belowcan be referred to for specific implementations.

Table 1 and Table 2 show design data of the camera optical lens 10according to Embodiment 1 of the present invention.

TABLE 1 R d nd νd S1 ∞ d0= −0.196 R1 1.004 d1= 0.428 nd1 1.5462 ν1 55.82R2 3.563 d2= 0.047 R3 −14.557 d3= 0.210 nd2 1.6668 ν2 20.53 R4 9.327 d4=0.210 R5 6.809 d5= 0.210 nd3 1.6668 ν3 20.53 R6 5.559 d6= 0.389 R7−4.083 d7= 0.579 nd4 1.5462 ν4 55.82 R8 −0.881 d8= 0.196 R9 −2.398 d9=0.336 nd5 1.5456 ν5 56.03 R10 1.322 d10= 0.279 R11 ∞ d11= 0.210 ndg1.5168 νg 64.16 R12 ∞ d12= 0.396

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, central curvature radius fora lens;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3: curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the object side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of the object side surface of the fifth lens L5;

R10: curvature radius of the image side surface of the fifth lens L5;

R11: curvature radius of an object side surface of the optical filterGF;

R12: curvature radius of an image side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 tothe object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 tothe object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5to the object side surface of the optical filter GF;

d11: on-axis thickness of the optical filter GF;

d12: on-axis distance from the image side surface of the optical filterGF to the image plane;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

vg: abbe number of the optical filter GF.

Table 2 shows aspheric surface data of respective lens in the cameraoptical lens 10 according to Embodiment 1 of the present invention.

TABLE 2 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10R1 7.0459E−02 −1.2258E−01  1.5336E+00 −1.1623E+01   4.7446E+01 R21.7244E+01 −3.4452E−01  6.2577E−01 −6.7952E+00   3.5062E+01 R35.0308E+02 −2.3041E−02 −1.6195E+00 2.5046E+01 −1.4877E+02 R4−1.1574E+02   1.5988E−01 −9.3752E−01 1.9393E+01 −1.1710E+02 R56.5023E+01 −3.6714E−01 −1.4289E+00 1.3915E+01 −7.1000E+01 R6 9.2237E−01−2.7929E−01 −1.5361E−01 1.6559E+00 −6.5342E+00 R7 9.2392E+00 −1.1651E−01−5.3780E−03 2.5248E−02  3.2414E−03 R8 −7.8220E−01   2.8001E−01−4.4890E−01 7.0999E−01 −5.6074E−01 R9 −2.3850E+00  −3.1058E−01 4.1042E−01 −2.3971E−01   8.0274E−02 R10 −1.3821E+01  −1.7837E−01 1.4309E−01 −8.0089E−02   2.7740E−02 Aspherical surface coefficients A12A14 A16 A18 A20 R1 −1.1185E+02  1.3868E+02 −7.4147E+01 R2 −8.0008E+01 7.0934E+01 −1.4236E+01 R3  5.0220E+02 −8.8868E+02  6.3791E+02 R4 3.9638E+02 −7.0635E+02  5.1242E+02 R5  1.9269E+02 −2.5751E+02 1.1633E+02 R6  1.4457E+01 −1.6154E+01  7.1283E+00 R7 −3.8625E−01 5.5687E−01 −2.0013E−01 R8  2.3803E−01 −5.5036E−02  5.8066E−03 R9−1.5785E−02  1.6993E−03 −7.7460E−05 R10 −5.8893E−03  6.9869E−04−3.4764E−05

In Table 2, k is a conic coefficient, and A4, A6, A8, A10, A12, A14,A16, A18 and A20 are aspheric surface coefficients.

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A20x ²⁰  (1)

In the present embodiment, an aspheric surface of each lens surface usesthe aspheric surfaces shown in the above condition (1). However, thepresent invention is not limited to the aspherical polynomial form shownin the condition (1).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 10 according toEmbodiment 1 of the present invention. P1R1 and P1R2 represent theobject side surface and the image side surface of the first lens L1,respectively; P2R1 and P2R2 represent the object side surface and theimage side surface of the second lens L2, respectively; P3R1 and P3R2represent the object side surface and the image side surface of thethird lens L3, respectively; P4R1 and P4R2 represent the object sidesurface and the image side surface of the fourth lens L4, respectively;and P5R1 and P5R2 represent the object side surface and the image sidesurface of the fifth lens L5, respectively. The data in the column“inflexion point position” refers to vertical distances from inflexionpoints arranged on each lens surface to the optic axis of the cameraoptical lens 10. The data in the column “arrest point position” refersto vertical distances from arrest points arranged on each lens surfaceto the optic axis of the camera optical lens 10.

TABLE 3 Number of Inflexion Inflexion Inflexion inflexion point pointpoint points position 1 position 2 position 3 P1R1 1 0.625 0 0 P1R2 10.305 0 0 P2R1 2 0.345 0.635 0 P2R2 0 0 0 0 P3R1 1 0.175 0 0 P3R2 20.235 0.805 0 P4R1 1 0.965 0 0 P4R2 3 0.875 1.065 1.365 P5R1 2 0.8752.135 0 P5R2 3 0.395 1.975 2.295

TABLE 4 Number of arrest points Arrest point position 1 P1R1 0 0 P1R2 10.555 P2R1 1 0.465 P2R2 0 0 P3R1 1 0.305 P3R2 1 0.405 P4R1 0 0 P4R2 0 0P5R1 1 1.815 P5R2 1 0.965

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and650 nm after passing the camera optical lens 10 according toEmbodiment 1. FIG. 4 illustrates a field curvature and a distortion oflight with a wavelength of 555 nm after passing the camera optical lens10 according to Embodiment 1, in which a field curvature S is a fieldcurvature in a sagittal direction and T is a field curvature in atangential direction.

Table 13 below further lists various values of Embodiments 1, 2 and 3and values corresponding to parameters which are specified in the aboveconditions.

As shown in Table 13, Embodiment 1 satisfies the respective conditions.

In this embodiment, the entrance pupil diameter of the camera opticallens 10 is 1.339 mm. The image height of the camera optical lens 10 is2.920 mm. The FOV (field of view) along a diagonal direction is 86.51°.Thus, the camera optical lens 10 can provide an ultra-thin, wide-anglelens with large apertures while having on-axis and off-axis aberrationssufficiently corrected, thereby leading to better opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1. A structure of a cameraoptical lens 20 in accordance with Embodiment 2 of the present inventionis illustrated in FIG. 5, which only describes differences fromEmbodiment 1.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present invention.

TABLE 5 R d nd νd S1 ∞ d0= −0.257 R1 1.038 d1= 0.488 nd1 1.5473 ν1 55.81R2 3.160 d2= 0.043 R3 8.266 d3= 0.215 nd2 1.6782 ν2 19.39 R4 4.050 d4=0.295 R5 −147.895 d5= 0.221 nd3 1.6668 ν3 20.53 R6 14.242 d6= 0.240 R7−3.674 d7= 0.556 nd4 1.5473 ν4 55.81 R8 −0.832 d8= 0.231 R9 −1.925 d9=0.301 nd5 1.5473 ν5 55.81 R10 1.632 d10= 0.258 R11 ∞ d11= 0.210 ndg1.5168 νg 64.16 R12 ∞ d12= 0.450

Table 6 shows aspheric surface data of respective lenses in the cameraoptical lens 20 according to Embodiment 2 of the present invention.

TABLE 6 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10R1 −5.9913E−02 −1.1495E−01 2.2387E+00 −2.4237E+01 1.5912E+02 R2−7.1858E+00 −5.0147E−01 4.8490E+00 −4.4314E+01 2.4635E+02 R3 −7.3730E+00−3.7645E−01 3.8142E+00 −3.3666E+01 2.1645E+02 R4  2.4636E+01 −2.1840E−032.4307E−01  2.5434E+00 2.2154E+01 R5 −1.9089E+02 −4.4439E−01−1.8133E−01   5.9557E+00 −5.5118E+01  R6  2.2316E+02 −4.0269E−016.8580E−01 −5.5987E+00 3.2093E+01 R7 −5.5174E+00 −1.5065E−01 3.8252E−01−3.1839E+00 1.2723E+01 R8 −8.5367E−01  4.1215E−01 −7.3380E−01  1.1986E+00 −1.6431E+00  R9 −1.1790E+00  1.0872E−02 −2.9058E−01  5.8766E−01 −5.6860E−01  R10 −1.3234E+01 −2.2740E−01 2.4249E−01−2.3878E−01 1.7519E−01 Aspherical surface coefficients A12 A14 A16 A18A20 R1 −6.5643E+02 1.6970E+03 −2.6608E+03 2.3044E+03 −8.4547E+02 R2−8.1359E+02 1.6078E+03 −1.9023E+03 1.2900E+03 −4.0755E+02 R3 −8.6673E+022.1950E+03 −3.5266E+03 3.3440E+03 −1.4250E+03 R4 −4.2846E+02 2.6932E+03−8.5189E+03 1.3629E+04 −8.7339E+03 R5  2.8301E+02 −8.4934E+02  1.4358E+03 −1.1776E+03   2.7815E+02 R6 −1.0942E+02 2.2563E+02−2.6944E+02 1.6974E+02 −4.3439E+01 R7 −2.9133E+01 4.0902E+01 −3.3996E+011.5154E+01 −2.7744E+00 R8  2.3430E+00 −2.4909E+00   1.5828E+00−5.3663E−01   7.5027E−02 R9  3.3724E−01 −1.2750E−01   2.9850E−02−3.9347E−03   2.2273E−04 R10 −9.1574E−02 3.2474E−02 −7.3729E−039.6320E−04 −5.4697E−05

Table 7 and Table 8 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 20 according toEmbodiment 2 of the present invention.

TABLE 7 Number of Inflexion Inflexion Inflexion Inflexion inflexionpoint point point point points position 1 position 2 position 3 position4 P1R1 1 0.705 0 0 0 P1R2 1 0.375 0 0 0 P2R1 0 0 0 0 0 P2R2 1 0.655 0 00 P3R1 0 0 0 0 0 P3R2 4 0.135 0.705 0.795 0.855 P4R1 4 0.795 0.915 1.0551.145 P4R2 3 0.785 1.085 1.315 0 P5R1 1 0.995 0 0 0 P5R2 3 0.385 1.7651.965 0

TABLE 8 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 0 0 P1R2 1 0.605 0 P2R1 0 0 0 P2R2 0 0 0 P3R1 0 0 0P3R2 2 0.225 0.925 P4R1 0 0 0 P4R2 0 0 0 P5R1 1 1.685 0 P5R2 1 0.835 0

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 435 nm, 486 nm, 546 nm, 587 nm and656 nm after passing the camera optical lens 20 according to Embodiment2. FIG. 8 illustrates a field curvature and a distortion of light with awavelength of 546 nm after passing the camera optical lens 20 accordingto Embodiment 2, in which a field curvature S is a field curvature in asagittal direction and T is a field curvature in a tangential direction.

Table 13 below further lists various values corresponding to the aboveconditions according to the present embodiment. The camera optical lens20 according to the present embodiment satisfies the respectiveconditions.

In this embodiment, the entrance pupil diameter of the camera opticallens 20 is 1.484 mm. The image height of the camera optical lens 20 is2.620 mm. The FOV (field of view) along a diagonal direction is 80.00°.Thus, the camera optical lens 20 can provide an ultra-thin, wide-anglelens with large apertures while having on-axis and off-axis aberrationssufficiently corrected, thereby leading to better opticalcharacteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1. A structure of a cameraoptical lens 30 in accordance with Embodiment 3 of the present inventionis illustrated in FIG. 9, which only describes differences fromEmbodiment 1.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present invention.

TABLE 9 R d nd νd S1 ∞ d0= −0.270 R1 0.973 d1= 0.492 nd1 1.5369 ν1 55.69R2 3.281 d2= 0.035 R3 14.779 d3= 0.199 nd2 1.6782 ν2 19.39 R4 5.051 d4=0.319 R5 −6.201 d5= 0.243 nd3 1.6782 ν3 19.39 R6 −15.023 d6= 0.283 R7−7.397 d7= 0.576 nd4 1.5467 ν4 55.82 R8 −0.881 d8= 0.165 R9 −1.124 d9=0.349 nd5 1.5461 ν5 56.03 R10 2.457 d10= 0.257 R11 ∞ d11= 0.210 ndg1.5168 νg 64.16 R12 ∞ d12= 0.400

Table 10 shows aspheric surface data of respective lenses in the cameraoptical lens 30 according to Embodiment 3 of the present invention.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 R1 −3.1754E−02 −3.9942E−03 1.6686E−01 −1.4474E+00 4.6069E+00 R2−2.9832E+01 −9.0350E−02 −8.7449E−01   4.9884E+00 −1.4608E+01  R3 4.1366E+02 −1.5932E−01 3.5409E−01  6.2595E−01 1.2430E+00 R4  3.6784E+01−6.4675E−02 2.9673E+00 −2.0415E+01 1.1029E+02 R5  4.2973E+01 −4.8483E−011.2710E+00 −1.0850E+01 5.9374E+01 R6  2.0163E+02 −3.6264E−01 3.8105E−02 9.6342E−01 −3.5320E+00  R7  2.3239E+01 −1.9180E−01 6.9721E−02−4.6371E−01 7.7323E−01 R8 −1.1164E+00  4.1973E−01 −5.9694E−01  6.6719E−01 −4.9299E−01  R9 −5.1480E+00 −6.5753E−02 7.0946E−02−2.2120E−02 4.0737E−03 R10 −3.3266E+01 −1.1652E−01 8.3629E−02−5.4745E−02 2.1228E−02 Aspherical surface coefficients A12 A14 A16 A18A20 R1 −7.4848E+00 7.3928E+00 −8.7584E+00  6.8209E−01 4.3653E+00 R2 3.3934E+01 −4.4884E+01   2.0542E−01 −4.0877E+01 1.4806E+02 R3 1.8197E+00 −1.0773E+01  −1.7696E+01 −3.9542E+01 1.7122E+02 R4−3.4678E+02 5.8039E+02 −3.4613E+02 −7.1958E+01 −2.5883E+00  R5−1.8459E+02 3.0883E+02 −2.2317E+02  2.5909E+01 −7.1300E+01  R6 8.9072E+00 −9.8053E+00   3.1693E+00 −2.1149E−01 8.9697E−01 R7−4.7453E−01 1.4318E−01 −2.2111E−02 −1.0961E−03 9.7193E−04 R8  2.0911E−01−4.6958E−02   4.7030E−03 −1.6532E−04 7.2406E−05 R9 −9.8586E−042.6617E−04 −3.2800E−05 −1.2377E−06 2.1382E−07 R10 −4.7694E−03 6.4139E−04−4.4901E−05  2.9868E−07 6.2145E−08

Table 11 and Table 12 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 30 according toEmbodiment 3 of the present invention.

TABLE 11 Number of Inflexion Inflexion Inflexion inflexion point pointpoint points position 1 position 2 position 3 P1R1 1 0.675 0 0 P1R2 20.345 0.665 0 P2R1 0 0 0 0 P2R2 0 0 0 0 P3R1 0 0 0 0 P3R2 3 0.705 0.7550.855 P4R1 1 0.925 0 0 P4R2 1 1.285 0 0 P5R1 2 0.845 1.635 0 P5R2 30.395 1.745 1.795

TABLE 12 Number of arrest points Arrest point position 1 P1R1 0 0 P1R2 10.605 P2R1 0 0 P2R2 0 0 P3R1 0 0 P3R2 0 0 P4R1 0 0 P4R2 0 0 P5R1 0 0P5R2 1 0.835

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 436 nm, 486 nm, 546 nm, 588 nm and656 nm after passing the camera optical lens 30 according to Embodiment3. FIG. 12 illustrates field curvature and distortion of light with awavelength of 546 nm after passing the camera optical lens 30 accordingto Embodiment 3, in which a field curvature S is a field curvature in asagittal direction and T is a field curvature in a tangential direction.

Table 13 below further lists various values corresponding to the aboveconditions according to the present embodiment. The camera optical lens30 according to the present embodiment satisfies the respectiveconditions.

In this embodiment, the entrance pupil diameter of the camera opticallens 30 is 1.419 mm. The image height of the camera optical lens 20 is2.590 mm. The FOV (field of view) along a diagonal direction is 76.80°.Thus, the camera optical lens 30 can provide an ultra-thin, wide-anglelens with large apertures while having on-axis and off-axis aberrationssufficiently corrected, thereby leading to better opticalcharacteristics.

TABLE 13 Parameters Embodiment Embodiment Embodiment and Conditions 1 23 f 3.013 3.043 3.165 f1 2.418 2.612 2.397 f2 −8.495 −11.955 −11.409 f3−48.694 −19.421 −15.744 f4 1.934 1.838 1.773 f5 −1.514 −1.567 −1.365 f123.129 3.099 2.833 f1/f 0.80 0.86 0.76 f1/f2 −0.28 −0.22 −0.21 (f1 +f4)/f 1.44 1.46 1.32 (f2 + f3 + f5)/f −19.48 −10.83 −9.01 d8/f 0.07 0.080.05 Fno 2.25 2.05 2.23

where Fno denotes an F number of the camera optical lens.

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present invention. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the spirit and scope of the present invention.

What is claimed is:
 1. A camera optical lens, comprising, sequentiallyfrom an object side to an image side: a first lens having a positiverefractive power; a second lens having a negative refractive power; athird lens having a negative refractive power; a fourth lens having apositive refractive power; and a fifth lens having a negative refractivepower, wherein the camera optical lens satisfies following conditions:0.75≤f1/f≤0.86;−0.30≤f1/f2≤−0.20;1.30≤(f1+f4)/f≤1.50;−22.00≤(f2+f3+f5)/f≤−9.00; and0.05≤d8/f≤0.08, where f denotes a focal length of the camera opticallens; f1 denotes a focal length of the first lens; f2 denotes a focallength of the second lens; f3 denotes a focal length of the third lens;f4 denotes a focal length of the fourth lens; f5 denotes a focal lengthof the fifth lens; and d8 denotes an on-axis distance from an image sidesurface of the fourth lens to an object side surface of the fifth lens.2. The camera optical lens as described in claim 1, further satisfying afollowing condition:0.30≤R1/f≤0.35, where R1 denotes a curvature radius of an object sidesurface of the first lens.
 3. The camera optical lens as described inclaim 1, further satisfying following conditions:−3.96≤(R1+R2)/(R1−R2)≤−1.19; and0.06≤d1/TTL≤0.21, where R1 denotes a curvature radius of an object sidesurface of the first lens; R2 denotes a curvature radius of an imageside surface of the first lens; d1 denotes an on-axis thickness of thefirst lens; and TTL denotes a total optical length from the object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.
 4. The camera optical lens as described in claim 1,further satisfying following conditions:−7.86≤f2/f≤−1.88;0.11≤(R3+R4)/(R3−R4)≤4.38; and0.03≤d3/TTL≤0.09, where R3 denotes a curvature radius of an object sidesurface of the second lens; R4 denotes a curvature radius of an imageside surface of the second lens; d3 denotes an on-axis thickness of thesecond lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.
 5. The camera optical lens as described in claim 1,further satisfying following conditions:−32.32≤f3/f≤−3.32;−4.81≤(R5+R6)/(R5−R6)≤14.84; and0.03≤d5/TTL≤0.10, where R5 denotes a curvature radius of an object sidesurface of the third lens; R6 denotes a curvature radius of an imageside surface of the third lens; d5 denotes an on-axis thickness of thethird lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.
 6. The camera optical lens as described in claim 1,further satisfying following conditions:0.28≤f4/f≤0.96;0.64≤(R7+R8)/(R7−R8)≤2.38; and0.08≤d7/TTL≤0.25, where R7 denotes a curvature radius of an object sidesurface of the fourth lens; R8 denotes a curvature radius of the imageside surface of the fourth lens; d7 denotes an on-axis thickness of thefourth lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.
 7. The camera optical lens as described in claim 1,further satisfying following conditions:−1.03≤f5/f≤−0.29;−0.74≤(R9+R10)/(R9−R10)≤0.43; and0.04≤d9/TTL≤0.15, where R9 denotes a curvature radius of the object sidesurface of the fifth lens; R10 denotes a curvature radius of an imageside surface of the fifth lens; d9 denotes an on-axis thickness of thefifth lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.
 8. The camera optical lens as described in claim 1,further satisfying a following condition:TTL/IH≤1.40, where TTL denotes a total optical length from an objectside surface of the first lens to an image plane of the camera opticallens along an optic axis; and IH denotes an image height of the cameraoptical lens.
 9. The camera optical lens as described in claim 1,further satisfying a following condition:Fno≤2.25, where Fno denotes an F number of the camera optical lens. 10.The camera optical lens as described in claim 1, further satisfying afollowing condition:0.45≤f12/f≤1.56, where f12 denotes a combined focal length of the firstlens and the second lens.